TABLE 4.

Average expression of rlrA islet genes in AC1500, an mgrA deletion strain, compared to expression in AC1481, an mgrA-overexpressing strain^a

TIGR4 open reading frameb	Gene	Fold difference in expression for the time course at an OD600 of:
		0.2	0.4	0.6	0.8
SP0461	rlrA	2.0	1.6	2.8	2.3
SP0462	rrgA	2.4	2.1	3.0	3.6
SP0463	rrgB	2.2	1.9	3.5	2.8
SP0464	rrgC	1.8	1.7	3.1	2.5
SP0466	srtB	2.0	2.8	2.7	2.8
SP0467	srtC	1.7	2.7	4.4	2.4
SP0468	srtD	2.4	1.7	2.3	1.5

^aThe log red/green ratios from replicate arrays were averaged at each time point. For each OD₆₀₀, the average log₂ value for each AC1481 sample was subtracted from the corresponding log₂ AC1500 value. The results are expressed as the fold difference in expression between the two strains. Data from all of the arrays used in this study are available elsewhere (6).

^bDesignations of the open reading frames in the TIGR4 sequence which are on the microarray.